Title (en)

INTAKE SYSTEM FOR MULTIPLE-CYLINDER ENGINE

Publication

EP 0416592 A3 19920902 (EN)

Application

EP 90117121 A 19900905

Priority

JP 23061389 A 19890905

Abstract (en)

[origin: EP0416592A2] An intake system for a multiple-cylinder engine has a plurality of discrete intake passages which are substantially equal to each other in length and are connected to the respective cylinders at their downstream ends. The upstream ends of the discrete intake passages are merged into an integrated chamber, and an upstream side intake passage communicates the integrated chamber with the atmosphere. The integrated chamber has an upstream side end face and a downstream side end face, and the cross-sectional area of the integrated chamber increases from the upstream side end face to the downstream side end face, the upstream side intake passage having opening into the integrated portion in the upstream side end face, and the discrete intake passages respectively having openings into the integrated chamber in the downstream side end face. The area of the upstream side and downstream side end faces of the integrated chamber S0 and S1, the sum of the areas of the openings of the discrete intake passages into the integrated chamber SN and the distance H between the upstream side and downstream side end faces of the integrated chamber satisfy the following formulae S0>0.25 x SN H/ 2ROOT S1>0.7 x (S1/S0) T

IPC 1-7

F02B 27/00; F02M 35/10

IPC 8 full level

F02B 27/00 (2006.01); F02M 35/10 (2006.01); F02M 35/104 (2006.01)

CPC (source: EP KR US)

F02B 27/00 (2013.01 - KR); F02B 27/006 (2013.01 - EP US); F02M 35/10052 (2013.01 - EP US); F02M 35/10059 (2013.01 - EP US); F02M 35/10072 (2013.01 - EP US); F02M 35/10131 (2013.01 - EP US); F02M 35/112 (2013.01 - EP US); Y02T 10/12 (2013.01 - EP US)

Citation (search report)

• [X] DE 3728179 A1 19890309 - OPEL ADAM AG [DE]
• [X] US 4664075 A 19870512 - POULOS STEPHEN G [US]
• [A] DE 3420703 A1 19851205 - NIER EUGEN
• [A] US 4731995 A 19880322 - MCFARLAND JR JAMES D [US]
• [A] PATENT ABSTRACTS OF JAPAN vol. 9, no. 103 (M-377)(1826) 8 May 1985 & JP-A-59 226 265 ( MAZDA ) 19 December 1984
• [A] PATENT ABSTRACTS OF JAPAN vol. 6, no. 267 (M-182)(1145) 25 December 1982 & JP-A-57 159 952 ( HINO ) 2 October 1982

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0416592 A2 19910313; EP 0416592 A3 19920902; EP 0416592 B1 19950405; DE 69018345 D1 19950511; DE 69018345 T2 19951123; JP H0392533 A 19910417; JP H0791983 B2 19951009; KR 910006607 A 19910429; KR 940006043 B1 19940702; US 5074258 A 19911224

DOCDB simple family (application)

EP 90117121 A 19900905; DE 69018345 T 19900905; JP 23061389 A 19890905; KR 900013928 A 19900904; US 57700590 A 19900904